By Podhorniak Lynda V.   Negron Juan F.   Griffith Francis D.   in Journal of AOAC International

ISSN:1944-7922|84|3|873-890

AOAC International‎(2001)‎

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By Reyes Juan   Robles Rafaela   Colon Hector   Negron Juan   Matos Tomas   Calderon Jose   in Archives of Suicide Research

ISSN:1381-1118|15|2|151-159

Routledge Ltd‎(2011)‎

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